CVE-2021-40407: Reolink RLC-410W IP Camera OS Command Injection Vulnerability

CISA Known Exploited Vulnerabilities

Name

Reolink RLC-410W IP Camera OS Command Injection Vulnerability

Vendor

Reolink

Product

RLC-410W IP Camera

Added to the catalog

2024-12-18

Due date for US federal agencies

2025-01-08

Weaknesses

CWE-78

Catalog version

2026.11.03

Reolink RLC-410W IP cameras contain an authenticated OS command injection vulnerability in the device network settings functionality.

Required action (CISA)

The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

• https://reolink.com/product-eol/
• https://reolink.com/download-center/
• https://nvd.nist.gov/vuln/detail/CVE-2021-40407

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2022-01-28T20:15:11.607

Last modified

2026-06-17T04:06:52.767

Weaknesses

CWE-78

An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns->domain variable, that has the value of the domain parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection. An attacker can send an HTTP request to trigger this vulnerability.

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1424 (Exploit, Third Party Advisory)
• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1424 (Exploit, Third Party Advisory)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40407 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:41:59.479Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2021-40407

CVE record

Assigner

talos

State

PUBLISHED

Published

2022-01-28T19:10:13.000Z

Updated

2025-10-21T23:15:48.390Z

Problem types

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns->domain variable, that has the value of the domain parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection. An attacker can send an HTTP request to trigger this vulnerability.

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1424

Read on 2026-11-03T01:08:51.781Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2021/40xxx/CVE-2021-40407.json

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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